I'm Petra Cox with Mom's Apple Pie Bakery in Occoquan, Virginia. We've made some blueberry muffin batter today. This is an optional crumb topping that you can put on blueberry muffins or any other kind of muffins that you might like to make.
So, what we need to make the crumb is a stick of butter. This is really cold butter. You can use either frozen or just very cold butter, and three quarters cups of all-purpose flour, and three quarters cup of sugar, and one teaspoon of salt, and that's all you need.
We're going to use a food processor today, but you can also use at home a pastry cutter, which is a small hand-held tool that you can get at a kitchen supply store. It has four or five blades and you just use it in a bowl and it cuts up the butter into smaller pieces. So, the objective of making the crumb is really just to get the butter in small pieces coated with the sugar and the flour.
So, this is a stick of butter, cut into pieces, probably about eight or ten pieces here. We're going to have three quarters cups of sugar. Here we go, three quarter cups of all-purpose flour. Again, scraping the top off of the cup of flour so that we can get a nice, even measurement there. Just spread a little bit of a savory quality. I like to use a little more salt, about a teaspoon. You can add a little less if you like. It's unsalted butter that we're working with, so I like to just have a little tiny bit of saltiness in there.
So, the food processors fit with a regular standard food processor blade. With the food processor that you have at home, you can either just pause it or keep the food processor on at a medium speed just until the butter is cut up into maybe pea sized bits or a little bit smaller. So, I'd like to pause it just so I can check on the progress and make sure that I'm not over-mixing it into like a dough.
So, it just took a few pauses with that, but for the most part, that should be the right texture. You've got some larger pieces and some smaller pieces. The sugar and the flour and the salt is fully incorporated. So this will make a nice, fine crumb to put on top of a blueberry muffin, and you just need to put a little bit on top of each muffin.
Again, you can do that with any kind of muffin you like, if you want to make some other kind of berry muffin like cranberry, or raspberry, or strawberry. So, we're just going to put little small handful on the top of each muffin. You can put it mostly right at the center, and you'll find this has a nice, soft kind of sandy texture and it just fells right out of your hand.
It will take a little longer, if you're using a pastry cutter at home, but the objective is to have pieces of butter, not much bigger than that, that will be part of the crumb. This cooks up into a nice, crispy top for the muffin. I think aesthetically it looks really nice, especially if you don't like your blueberry muffins looking too blue. This has a nice, white, crumbly top.
So, we have some leftover here that you can just put in freezer bag or just a little bowl wrapped up with foil, and you can stick it in the freezer. It should last probably up to a month for your next batch of blueberry muffins, or if you like a little extra, you can put that on the muffins too.
Now, we're ready to bake them. Here in our bakery, we have a convection oven, and that runs probably about anywhere from 50 to 100 degrees past regular oven temperature. In your home oven, it will probably be more like around 350 degrees where we do it at 300 degrees here in our oven. The convection ovens blow air around faster and the food tends to cook faster and hotter.
So, 300 degrees in a convection oven, industrial convection oven, or 350 degrees at your home oven. It should take probably about 25 minutes to cook the muffin all the way through in your standard oven, but you can test with a toothpick and if it comes out clean, it should probably be ready. So, I'm going to put that in the oven.
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